Glass severing apparatus



May 20, 1952 N. POND ETAL 2,597,373

GLASS-SEVERING APPARATUS May 20, 1952 L. N. POND ET AL 2,597,373

` GLASS-SEVERING APPARATUS Filed Maron 1s, 1949 4 sheets-sheet 2 IN V ENTORJ EAA/DEE A. Polvo mvv BY /Vofenmv /V/u' h//s/YER May 20, 1952 L. N.POND ETAL 2,597,373

GLASS- SEVERING APPARATUS Filed March 16, 1949 4 Sheets-Sheet 5 May 20,1952 Y L. N. POND ETAL 2,597,373

GLASS- SEVERING APPARATUS Filed March 1e, 1949 4 sheets-sheet 4 INVENTOREA/vasi? /lf a/vo mvo BY IVe/mmv /Vex //s/vee Patented May 20, 1952`GLASS SEVERING APPARATUS Leander N. PondY and Norman Mair` Wisner,

Corning, N. Y., as sgnors.V to` Corning Grlass-v Works, Corning, NY. Y.,a corporation of New Application March 16, 1949, Serial No. 815673y(CLAS-148) 8 ,Claima- Thek presenteinventon relates to glass severing`apparatus and is particularly concerned with the` provision of anarrangement suitable for use with tube o r `cane drawing apparatusassociated with a vmoltenglass Vsupply body from which a; linear body oftubing -orcane is drawn continuously.

In using drawing-apparatus ofthe foregoingKVV general charactervwhereinthe glass is drawn in a vertical plane, it .hasy been the generalpractice for an attendant to manually sever the tubing or cane, as itlissues from the apparatus, into desiredl lengths convenient forhandling.

The prime object of the present invention is an arrangement suitable forautomatically severing and separating predetermined lengths of tubing orcane as it issues from an apparatus by means of which the glass is drawnin a vertical plane.

Fig. l `ofthe accompanying drawings is a perspective View of anapparatusembodying the invention, shown associated with a conventionalformof updraw machine.

Fig. 2 is ,an enlarged fragmentary view of part of theapparatus of Fig.1 primarily illustrating chucks and parts -of a conveyor adapted toseizey andconvey severed lengths of glass out of the vertical path ofthe oncoming glass.

Fig. 2a is a fragmentary view primarily illustrating a further part ofthe conveyor and an associated cam under whose control the chucks areopened and closed.

Fig. 2b is afragmentary sectional view showing the-oppositeend oftheportion of the conveyor strewn-in. Fia 2g- Fig@ 3isnaseetiona l planviewof the apparatus ofFig.- 1 of particular value in depicting the drivearrangement of applicants apparatusand its manner of drivevfrom thetubefdrawing ma- Chine Fig. Sais a View taken on line Sapa. of Fig. 3with certain parts broken away.

Fig. 4 is afragmentary view of the apparatus taken Von line `I-II ofFig. 3.

Fig. 5k is a fragmentary view taken on line 5-5 of Fig. 4.

Fig. 6 is a fragmentary View taken on line 6--6 of Fig.v 5.

In brief, the'conventional drawing apparatus illustratedcomprises adrawing wheel II (Figs. 1' and/4:3)y carried bya shaft I2 extending froma transmission case` I3 ,and driven by a motor (notv shown) connected-,indriving relationto a shaftl I4 entering the opposite end of case I3.VA wheel I5,v supportedonanarm I6 (Fig. 1'), is adapted to ho1dthe-tubingi orcane 20 (hereinafter referred torasvtubing') being drawnupward fromv a.-

supply Source (notfslioih in1;ensite@ment.with` the-driving wheel IIunder tensionof la spring` App1i cants associated yseveri-ng apparatusVin 1 cludes a vertical vstandard IIJ (Figs,` 1 and .3) hayinglater-allyprojectingarmsZI, 22,.'a111d-23, each carrying rollersrsucn asrollers 24, 25 and 25 (Fig. 2) which lightly engagevthe drawn glasstubing- 2B to give it support against whipping movements, particularlywhen very small-diameter tubing is being drawn.

Each time thetubing being drawn attains the desiredheighti for examplethe height of standardIQ, an abrading discr26 (Figs. l, 2, 3,; and5)driven by a motor 2'I (Figs. 3, 5, and 6) engagesthe tubing Ato, abradeit and moves upward Ialong a path parallel to its axis until the tubingis suitably abraded. The abrading disc 26 thereafter moves away from thetubing and down to its starting rposition.

T o move the disc 26 through the above-described path,4 it and motor 2'Iare carried by a support 33 (Figs. 3, 5, and 6) pivotally mounted at 3lupon anparm 31' of a` bell crank pivoted at132-andihaving its other arm33 attached to a link 34^extending to the free end of an operating arm35 fixed to a shaft 36. An arm 38 having onevend also iixed to shaft 36at its other end carries,` a roller 33 adapted to travel in a groove40;'of`adrurn1oam 4I. The contour of groove 4E] is such astogswingsupport 30 and with it the disc 26, a desired distance towardand away from the path of travel of the tubing once during eachrevolution of drum 4I.

The. suppQrt'30, inaddition to being Divotally carried onl bellcrankarm3l', isalso connected by a link 42 to one end of'a lever 43pivoted at 44, and at the .other end carrying a. roller 45 adapted t0.ride in a cam groove 46 in drum 4I. The contour of lgroove 46 determinesthe extent support 30g-will turn about pivot 3| during each revolutionof the drum 4 I;

The. contoursfand relation of grooves 46 and 46 are suchv that duringeach revolution of drum 4I the axis ofdisc 26 is maintained parallel tothe direction of draw, is brought into engagement with theV glass, movesupward in unison therewith while` performing anabrading operation, andis then drawn away therefrom and returned to its lowermost positionuntil such time that its upwardmovement again begins. Thedrum vIII isxedfto ashaft .-14 ydriven by the tube-.drawing drivefthrough-- achain43 (Fig. 3), as will'be fully described hereinafter. An arm :'50v(Figs. 1, 2, and 3) at the base of .the verticalv standard I9 lprovidesa rigid backstop for the tubing during the abrading operation.

Immediately after abrasion of the tubing the length to be severed isseized by a plurality of chucks, such as chucks C and Cl (Fig. 2). Thesechucks have Ilxed jaws 5l and 5I respectively, and movable jaws 52 and52 respectively, carried on extensions 53 and 53 of a conveyor 55. Theconveyor 55 is freely rotatable about a column 56 (Fig. 1, 2a, 2b, and3) whose axis is approximately 45 from the horizontal, so that duringeach revolution of conveyor 55, chucks C and Cl pass through thevertical path of travel of the glass Iand through a horizontal pathconvenient for the delivery of seized tubing to a suitable support.

Each movable chuck jaw, such as jaw 52' of chuck Cl (Fig. 2), isattached to one arm of a bell crank. For example, chuck jaw 52 isattached to bell crank arm 5l of a bell crank pivoted on conveyorextension 53. The other arm 58 and the corresponding arms of the bellcranks of the remaining chucks are connected to one another by anactuating link 60 so that the movable jaws are operable in unison.Actuation of chucks C and Cl is effected by means o1' a rod 6l coupledbetween bell crank arm 51 and one end of an actuating lever 52 pivotedintermediate its ends at 63 on conveyor 55. A springactuated pull rod 65tends to hold the lever 62 in position to hold the chucks C and CIclosed.

Opening and closing of the chucks is under control of a crown cam 66fixed to the free end of column 56 and cooperative with the free end oflever 62 as the conveyor 55 rotates about the column. The cam 66 is ofsuch contour as to permit sudden closure of the chucks the instant thatthey are brought into seizing relation with a tube. As movement of thechucks transversely of the path of travel of the tube continues, theseized tube breaks where abraded. Fixed arm 50 at the base of standardI9 assists the wheels Il and l5 in holding the oncoming tubing verticalduring the breaking operation. The contour of cam 68 is also such thatit quickly opens the chucks at such time that they approach a positionin which the held tube is in a horizontal position. In this position thetube is over a group of tube-receiving bars, such as bars 10 (Fig. 1),and is free to roll by gravity from the open chucks onto a pair ofconveyor extensions 54 and 54 from which it drops onto the receivingbars.

The conveyor 55 receives its drive from a shaft ll (Figs. 3 and 3a) of avariable speed transmission assembly 12 driven by chain 49. Shaft 'I'Iis connected through a clutch 13 to shaft 14, which. in addition tocarrying drum 4|, carries a bevel gear 15. Gear 15 is in mesh with asimilar gear I6 mounted on one end of a shaft 11. The other end of shaft'Il terminates in a gear box 'I8 and is provided with a bevel gear 19 inmesh with a bevel gear 80 having a hub 8| keyed to the conveyor 55.Turning movement of column 56, about which conveyor 55 rotates, isprevented by a holding bar 82 (Figs. 1 and 5) having one end clampedabout the lower end of the column and having its other end suitablyattached to framework 83 of the apparatus.

We claim:

l. In an apparatus for severing a linear body of glass into sections ofpredetermined length as such body passes toward a delivery position, anabrader arranged along the path of travel of the body, means foroperating said abrader at predetermined intervals to abrade the bodyalong the desired lines of severance, a chuck, means for conveying saidchuck about an endless path passively bringing it across that portion ofthe path of movement of the body between the abrader and deliveryposition immediately after an abrading operation, and means for closingsaid chuck about the body so that as the travel of the chuck continues,that portion of the body between the abrader and delivery position isfractured where abraded and carried away by said conveying means.

2. An apparatus such as defined by claim 1, wherein means is providedadjacent the abrader for taking the lateral thrust applied to the bodywhile completion of fracture is taking place.

3. In an apparatus for conveying a length of glass from a vertical planeof formation to a horizontal plane, a chuck, a rotatable conveyor forsaid chuck adapted to move the chuck about an endless path crossing thepath of travel of the glass in a horizontal direction, means forcontinuously rotating said conveyor, means for actuating said chuck toseize the glass each time the path of travel of the latter is crossed,and means for automatically abrading the glass substantially at the timeof seizure so that during the subsequent movement of said chuck aboutits path, fracture of the glass is effected in the abraded area, saidsecond means being operable to thereafter restore said chuck to releasethe seized glass therefrom.

4. In an apparatus such as dened by claim 3, wherein the means foractuating the chuck includes an element carried by the conveyor andcooperative with a cam xed with respect to said conveyor.

5. For use with a machine for the continuous draw of a linear body ofmaterial to a position for severance, an abrader, means for operatingsaid abrader at predetermined intervals to abrade the body being drawnpreparatory to complete severance of a section thereof therefrom, achuck, means for conveying said chuck along an endless path passingtransversely through the path of movement of the body into engagingrelation with the section thereof to be separated therefrom, and meansfor closing said chuck about the section of the body engaged, so that asthe travel of the chuck continues, the seized section is fractured whereabraded and carried away bysaid chuck, said last means including meansfor opening said chuck to free the section therefrom after it is carriedaway from the parent body and before the chuck again passes through thepath of movement of the body.

6. In an apparatus for intermittently abrading a linear glass body assuch body passes a predetermined zone in its path of travel toward adelivery position, a support,'an abrading disc and driving meanstherefor mounted on said support, and means for so moving said supportthat said disc is brought into a position to engage the body and movetherewith for a limited distance, and for then so moving said supportthat said disc is moved out of the latter position and restored to itsinitial position, said means including two separately controlledlinkages, one turning said support through an arc primarily transverseto the path of travel of the body, and the other turning said supportabout an arc primarily longitudinal to the path of travel of the body.

'7. In a mechanism for severing lengths of glass from a linear supplybody thereof as such body moves from a source of formation toward adelivery position, an abrader arranged along the path of travel of thesupply body, means for automatically engaging said abrader with the bodyduring a limited distance of its travel each time a desired lengththereof has passed said abrader, means for seizing the length which haspassed the abrader at substantially the same time that said abraderbecomes disassociated therefrom, a rotatable conveyor supporting saidlast means and adapted to continuously rotate to move such means along acircular path of travel passing transversely through the path of travelof the supply body whereby the seized section is fractured and movedoutof the path of the supply lbody, and means for continuously rotatingsaid conveyor.

8. An apparatus for severing a linear body of glass into sections ofpredetermined length as such body passes toward a delivery position,comprising an abrader arranged along the path of travel of the body,operating means for said abrader capable of operating the same atpredetermined intervals to abrade the body along the desired lines ofseverance, means for seizing the abraded lengths of the body, a conveyoradapted to move such means along an endless path of travel passingtransversely through the path of travel of the body between the abraderand the delivery position, means for actuating said seizing means as anabraded length of the body is encountered thereby, whereby the seizedsection of the body is fractured from and moved out of the path oftravel of the body, and means for continuously rotating said conveyor.

LEANDER N. POND.

NORMAN MAX WISNER.

REFERENCES CITED The following references are of record in the le ofthis patent:

UNITED STATES PATENTS Number Name Date 1,539,258 Graupner May 26, 19251,573,232 Ekstrom Feb. 16, 1926 1,996,387 Owen Apr. 2, 1935 2,195,625Knaggs Apr. 2, 1940 2,415,997 Eldred Feb. 18, 1947

